WIT Press

Identification Of Errors In Constitutive Models By Sensitivity Analysis

Price

Free (open access)

Paper DOI

10.2495/CP960071

Pages

10

Published

1996

Size

804 kb

Author(s)

M.H. Meuwissen, C.W. Oomens, F.E. Veldpaus & J.D. Janssen

Abstract

An approach for adjustment of defects in constitutive models is presented. First, the parameters in an initial model are determined from a measured dis- placement field and the residuals are analysed. If the residuals are unaccept- able, a set of candidate model extensions is specified. From this set, the 'best' model extension is selected by performing a sensitivity analysis. By means of numerical simulations, it is shown that this approach can be applied to find the 'best' model for a class of inhomogeneous materials in a fast way. 1 Introduction. To characterise the mechanical behaviour of a material quantitatively, a constitutive model must be chosen and the parameters in this model must be determined. In

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